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Engine-Codes – Nissan – P1126 2003 Nissan Altima Sedan

P1126 2003 Nissan Altima Sedan Code - Throttle Control Motor Relay Circuit Open

Quick Answer

The P1126 code in a 2003 Nissan Altima Sedan indicates a problem with the throttle control motor relay circuit being open. Common causes include Damaged wiring or connectors in the throttle control motor relay circuit, Faulty throttle control motor relay, Malfunctioning throttle control motor. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1126 2003 Nissan Altima Sedan indicates Throttle Control Motor Relay Circuit Open.
Common causes
Common causes include Damaged wiring or connectors in the throttle control motor relay circuit, Faulty throttle control motor relay, Malfunctioning throttle control motor.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code P1126 2003 Nissan Altima Sedan Description

The P1126 code in a 2003 Nissan Altima Sedan indicates a problem with the throttle control motor relay circuit being open. This means that there is an issue with the electrical circuit that controls the throttle motor relay, which is responsible for regulating the throttle opening in response to driver input. The throttle control motor relay is crucial for maintaining proper engine performance and fuel efficiency.

OBDII Code P1126 2003 Nissan Altima Sedan - Throttle Control Motor Relay Circuit Open
P1126 2003 Nissan Altima Sedan Code - Throttle Control Motor Relay Circuit Open

Common Causes of P1126 2003 Nissan Altima Sedan

  1. Damaged wiring or connectors in the throttle control motor relay circuit
  2. Faulty throttle control motor relay
  3. Malfunctioning throttle control motor
  4. Corrosion or poor connections in the circuit
  5. Electrical issues such as blown fuses or relays

Symptoms of P1126 2003 Nissan Altima Sedan

  1. Engine hesitation or lack of response when accelerating
  2. Rough idling or stalling
  3. Reduced power or poor acceleration
  4. Illumination of the Check Engine Light
  5. Vehicle going into limp mode

How to Fix P1126 2003 Nissan Altima Sedan

  1. Begin by conducting a thorough inspection of the throttle control motor relay circuit, checking for damaged wiring, connectors, or corrosion.
  2. Test the throttle control motor relay using a multimeter to determine if it is functioning correctly.
  3. Inspect the throttle control motor for any signs of malfunction and test its operation.
  4. Replace any damaged wiring, connectors, or components as needed.
  5. Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1126 2003 Nissan Altima Sedan

The typical repair costs for addressing a P1126 code in a 2003 Nissan Altima Sedan can vary depending on the specific cause of the issue. In general, the cost of parts for replacing a throttle control motor relay or throttle control motor can range from $50 to $200. Labor costs at auto repair shops typically range from $80 to $150 per hour. The total repair cost, including parts and labor, could range from $150 to $500 or more. It is advisable to consult with a professional mechanic to get an accurate estimate based on the specific diagnosis and repair needed for your vehicle.

When is the Code Detected?

Engine Control Module (ECM) detects a voltage of power source for throttle control motor is excessively low.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1126 2003 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P1126 in a 2003 Nissan Altima Sedan?

The common symptoms of code P1126 in a 2003 Nissan Altima Sedan include poor acceleration, stalling, rough idling, and the Check Engine light being illuminated.

2. What does the OBDII code P1126 "Throttle Control Motor Relay Circuit Open" mean for a 2003 Nissan Altima Sedan?

The code P1126 indicates that there is an open circuit in the throttle control motor relay of the 2003 Nissan Altima Sedan, which can affect the proper functioning of the throttle control system.

3. What are the possible causes of OBDII code P1126 in a 2003 Nissan Altima Sedan?

Possible causes of code P1126 in a 2003 Nissan Altima Sedan include a faulty throttle control motor relay, damaged wiring or connectors in the circuit, or a malfunctioning throttle control motor.

4. How can I diagnose the OBDII code P1126 in my 2003 Nissan Altima Sedan?

To diagnose code P1126 in a 2003 Nissan Altima Sedan, you can use an OBDII scanner to retrieve the code, visually inspect the throttle control motor relay and related wiring, and perform a continuity test on the relay circuit.

5. Can I continue driving my 2003 Nissan Altima Sedan with OBDII code P1126?

It is not recommended to continue driving your 2003 Nissan Altima Sedan with code P1126, as it can lead to further damage to the throttle control system and potentially affect the vehicle's performance and safety.

6. How can I repair OBDII code P1126 in my 2003 Nissan Altima Sedan?

To repair code P1126 in a 2003 Nissan Altima Sedan, you may need to replace the throttle control motor relay, repair any damaged wiring or connectors, or replace the throttle control motor if it is found to be faulty.

7. Is it possible to reset the OBDII code P1126 in my 2003 Nissan Altima Sedan without fixing the issue?

Resetting the code without fixing the underlying issue will only temporarily turn off the Check Engine light. The code is likely to reappear once the ECU detects the same problem during the next diagnostic cycle.

8. How much does it cost to repair OBDII code P1126 in a 2003 Nissan Altima Sedan?

The cost of repairing code P1126 in a 2003 Nissan Altima Sedan can vary depending on the exact cause of the issue, the cost of parts, and labor rates. It is recommended to consult with a mechanic for an accurate estimate.

9. Can a DIY enthusiast fix OBDII code P1126 in a 2003 Nissan Altima Sedan?

Depending on your experience and tools available, a DIY enthusiast may be able to diagnose and repair code P1126 in a 2003 Nissan Altima Sedan by following repair guides and using proper safety precautions.

10. How long does it take to repair OBDII code P1126 in a 2003 Nissan Altima Sedan?

The repair time for code P1126 in a 2003 Nissan Altima Sedan can vary based on the exact cause and complexity of the issue. It may take anywhere from a few hours to a full day to diagnose and fix the problem.

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